Bis(pentamethylen)harnstoff 5-(Trifluormethyl)uracil 4-(2'-Oxobenzimidazolin-1'-yl)piperidin Azaribin 5-Brom-2'-deoxyuridin 5-Fluor-2'-desoxyuridin 2'-Desoxyuridin 5-Bromuridin Dinatriumuridin-5'-monophosphat Uridin-5'-(trinatriumpyrophosphat) 2-(β-D-Ribofuranosyl)-1,2,4-triazin-3,5-diol 2,4-Dihydroxypyrimidin-5-carbonsure 2,5-Dioxo-1,3-diazolidin-4-ylessigsaeure 5-Methyluracil